Description
CD4022
is
TTL logic Octal Counter IC
. It has eight output pins which increments from zero to eight for every input clock pulse. The maximum clock frequency is 5Mhz and is commonly used in digital counters, LED drivers, and other digital arithmetic applications.
Pin Configuration
Pin Number
Pin Name
Description
1 to 6 and 7,10,11
Output pins 0 to 7
These are the 8 output pins on which the counting occurs, they are not in order hence verify pin diagram above
8
Vss or Ground
Connected to the Ground of the circuit
12
Carry Out (CO)
This pin goes high after the IC counts from 1 to 10. This is used as a carry while counting.
13
Clock Enable (EN)
This is an input that when made high will hold the count at the current state
14
Clock
The counting happens when this clock pulse goes high, this pin is normally connected to a 555 timer or other uC to produce a pulse
15
Resets
As the name suggests this pin resets the count back to 1
16
Vdd / Vcc
Connects to the supply voltage typically +5V
Features
High speed 16 pin
CMOS Decade counter
Supports 10 decoded outputs
wide supply voltage range from 3V to 15V, typically +5V
TTL compatible
Operating Clock Frequency: 5 Mhz
High-Level Output Voltage: 4.5V @5V Vcc
High-Level Output Current: 0.36mA
Available in a 16-pin PDIP package
Note: Complete Technical Details can be found on the
CD4022 datasheet
given at the end of this page.
Where to use CD4022 IC
The
IC CD4022
is used for counting applications, it has the capability to turn on 8 outputs sequentially in a pre-defined time and reset the count or hold it when required. It also has the capability to indicate the status of counting using a Carry pin. This is commonly used for LED chasers and other logical output projects, where you need to perform arithmetic operations. It is also called a Divide by 8 Counter since the carry pin produces one clock pulse for every 8 pulses on the clock pin. So if you are looking for a sequential decoded counting IC that can count up to 8 then this IC will be your right choice.
Applications
Used in LED matrix, LED chaser, and other LED projects
Binary counter or Binary decoder
Can be used for dividing by N counting
remote metering, automotive, medical electronic
Instrumentation and Alarm systems
Component Datasheet
CD4022 Datasheet
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